diff mbox series

[4.14,106/242] RDMA/cxgb4: Validate the number of CQEs

Message ID 20201228124909.913851885@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Dec. 28, 2020, 12:48 p.m. UTC 
From: Kamal Heib <kamalheib1@gmail.com>

[ Upstream commit 6d8285e604e0221b67bd5db736921b7ddce37d00 ]

Before create CQ, make sure that the requested number of CQEs is in the
supported range.

Fixes: cfdda9d76436 ("RDMA/cxgb4: Add driver for Chelsio T4 RNIC")
Link: https://lore.kernel.org/r/20201108132007.67537-1-kamalheib1@gmail.com
Signed-off-by: Kamal Heib <kamalheib1@gmail.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 drivers/infiniband/hw/cxgb4/cq.c |    3 +++
 1 file changed, 3 insertions(+)
diff mbox series

Patch

--- a/drivers/infiniband/hw/cxgb4/cq.c
+++ b/drivers/infiniband/hw/cxgb4/cq.c
@@ -906,6 +906,9 @@  struct ib_cq *c4iw_create_cq(struct ib_d
 
 	rhp = to_c4iw_dev(ibdev);
 
+	if (entries < 1 || entries > ibdev->attrs.max_cqe)
+		return ERR_PTR(-EINVAL);
+
 	if (vector >= rhp->rdev.lldi.nciq)
 		return ERR_PTR(-EINVAL);